Numbers and place value · Ages 6–7

Counting in 2s, 3s, 5s and 10s worksheet

Part of: Numbers to 100

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Numbers and place value · Ages 6–7

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Write each answer in the space. For word problems, show your working and write a sentence answer.

1.Count in fives: 65, 70, 75,
Answer:
2.Count in tens: 27, 37, 47,
Answer:
3.Count in twos: 30, 32, 34,
Answer:
4.Count back in tens: 46, , , 16
Fill in each blank
Answer:
5.Each row in the picture has 10 🎈. Counting in 10s, how many are there?
Answer:
6.Count back in tens: 97, , , 67
Fill in each blank
Answer:
7.Counting in threes from 3: 3, 6, 9, … What is the 20th number you say?
Answer:
8.Counting in threes from 1: 1, 4, 7, … What is the 10th number you say?
Answer:

13.Chi-keung has 11 pairs of socks. How many socks does Chi-keung have?
Working:
Answer:
14.A tricycle has 3 wheels. There are 10 tricycles in the park. How many wheels are there altogether?
Working:
Answer:
15.Tsz-ching's money box has 11 five-dollar coins. How many dollars are in it?
Working:
Answer:
16.A frog on a number line starts at 16 and jumps 10 steps forward each time. It jumps 5 times. Which number does it land on?
Working:
Answer:
17.A box holds 10 crayons. Tsz-ching has 6 boxes. How many crayons is that?
Working:
Answer:
18.Ka-yee climbs the stairs 3 steps at a stride: the 1st stride lands on step 3, the 2nd on step 6. Which step does the 7th stride land on?
Working:
Answer:

Show the answers and working

Counting in 2s, 3s, 5s and 10s worksheet: Answers and working

1. 80
Counting in fives adds 5 each time, and the ones digit is always 5 or 0. What is 5 more than 75?
5 more each time, ending in 5 or 0: 75 + 5 = 80.
2. 57
Counting in tens, the tens go up 1 each time and the ones stay. What happens when 47's tens go up 1?
10 more each time: the tens go up 1 and the ones stay, so after 47 comes 57.
3. 36
Counting in twos adds 2 each time. What is 2 more than 34?
2 more each time: 34 + 2 = 36.
4. 36, 26
Counting back in tens, the tens go down 1 each time and the ones stay the same.
10 less each time: the tens go down 1 and the ones stay: 46, 36, 26, 16.
5. 90
Count in 10s: say the next number for each row until every row is counted.
Each row is 10 more; after 9 rows you reach 90.
6. 87, 77
Counting back in tens, the tens go down 1 each time and the ones stay the same.
10 less each time: the tens go down 1 and the ones stay: 97, 87, 77, 67.
7. 60
The 1st is 3. How many lots of 3 is the 20th past the 1st?
The 1st is 3, and each after is 3 more. The 20th is 19 lots of 3 more than the 1st: 60.
8. 28
The 1st is 1. How many lots of 3 is the 10th past the 1st?
The 1st is 1, and each after is 3 more. The 10th is 9 lots of 3 more than the 1st: 28.

9. D. 52
Counting in fives from 0, the ones digit is only ever 5 or 0. Look at each number's ones digit.
Counting in fives from 0, the ones digit is only ever 5 or 0; 52's isn't.
10. C. 51
Count in threes from 0 and see which number you land on. For big ones, jump to 30, 60 or 90 first.
From 0, 3 more each time: 17 counts reach 51, so you say 51.
11. False
Counting in tens never changes the ones digit. Check whether 35 ends in 9.
Counting in tens never changes the ones: from 9, every number you say ends in 9.
12. False
Counting in tens never changes the ones digit. Check whether 53 ends in 8.
Counting in tens never changes the ones: from 8, every number you say ends in 8.

Marking: 2 for the working, 1 for the answer, 1 for the sentence.

13. 22 socks
A pair of socks is 2. Count in twos, 11 times.
A pair is 2; counting in twos 11 times: 22.
14. 30 wheels
Each tricycle has 3 wheels. Count in threes, 10 times.
3 wheels each: count in threes 10 times: 30.
15. 55 dollars
Each coin is $5. Count in fives, 11 times.
Each coin is $5: count in fives 11 times and you reach 55.
16. 66
Start at 16 and count on in 10s, one count for each jump, 5 counts in all.
From 16, count on in 10s, 5 times: you reach 66.
17. 60 crayons
Each box holds 10. Count in tens, 6 times.
Count in tens 6 times: 60.
18. 21
Each stride is 3 more steps. Count in threes, once for each stride.
Each stride is 3 more: count in threes 7 times to step 21.

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